problem with samsung ue22f5000ak

[matir]

I have a problem with a Samsung ue22f5000ak going on and off first quarter of the backlight at the bottom right.
it is possible to obtain the schematics
Sorry for my english but I'm using a translator.

[matir]

Re: problem with samsung ue22f5000ak

The led panel is au optronics m215hw03 v.1

[thoma]

Re: problem with samsung ue22f5000ak

http://www.samsung.com/uk/support/mo...22F5000AKXXU#n

[thoma]

Re: problem with samsung ue22f5000ak

https://elektrotanya.com/samsung_ua1.../download.html

schematic Wait until GET MANUAL appears!

[dskall]

Re: problem with samsung ue22f5000ak

Very good translator

[matir]

Re: problem with samsung ue22f5000ak

can anyone provide me the electronic diagram of the LED display control

[matir]

Re: problem with samsung ue22f5000ak

No news ?

[Andrew F. Ali]

Re: problem with samsung ue22f5000ak

You may get mere responses if you post pictures of the screen so we could see the symptom you are getting. Also post clear focused pictures of the TV with back cover removed so we could see the layout of the boards. Thank you.

[matir]

Re: problem with samsung ue22f5000ak

Ok, now I provide

[matir]

Re: problem with samsung ue22f5000ak

Ok here are the pictures of the display with the defect and the TV open

[dick_barton]

Re: problem with samsung ue22f5000ak

The panel specification says two light bars each having 64 leds in total per bar.
Each made up of 16 leds x 4 strings
I suspect you have lost the bottom right hand lower string of leds.

Edit
The pictures are to small to be of help.

[freakaftr8]

Re: problem with samsung ue22f5000ak

Possible bad connection or open wire on led string. Make sure that no wires going behind the panel are frayed or shorted to the frame. Sometimes the connectors that go into the light strips themselves behind the LCD panel can lose connection. But more thinking of possibly an open LED on that quadrant of the strip

[dskall]

Re: problem with samsung ue22f5000ak

Doesn't seem to be dark in all pictures

[matir]

Re: problem with samsung ue22f5000ak

The lighting in the lower right is not always off, but is turned on and off every second.
The defect will diminish over time, but always persists

[vinceroger69]

Re: problem with samsung ue22f5000ak

certainly sounds like a led issue maybe time to strip the lcd down and check them out.

[freakaftr8]

Re: problem with samsung ue22f5000ak

LED turning on and off is usually a bad LED but remember it could also be related to an LED controller IC if it uses a certain type of balancing circuit. This controller would be located on the power supply does the flashing interval change or does he led come back on if you adjust backlight brightness

[matir]

Re: problem with samsung ue22f5000ak

The controller is SLC5013R, but the brightness adjustment should not be on the entire LED bar?

[freakaftr8]

Re: problem with samsung ue22f5000ak

Not brightness, but backlight luminance control in the menu.

[matir]

Re: problem with samsung ue22f5000ak

Ok but control of the backlight luminance should not cover the entire bar and not just a part?

[budm]

Re: problem with samsung ue22f5000ak

Backlights level setting controls ALL the LEDs.